Locking fastener shaped like Chinese character'ri '

A locking fastener shaped like a Chinese character'ri 'comprises a first fastener seat and a second fastener seat, two sides of the first fastener seat and two sides of the second fastener seat are respectively provided with mounting holes, one end of the outer side of the first fastener seat is rotatably connected with a retaining ring, the retaining ring is movably arranged on the second fastener seat, the inner side of the second fastener seat is provided with a containing groove, an elastic piece is arranged in the containing groove, and one end of the elastic piece is provided with a locking piece in a penetrating mode. The containing groove is formed, the elastic piece and the locking piece are arranged in the containing groove, one end of the locking piece is arranged on the elastic piece in a penetrating mode, the elastic piece is of a step structure, a traditional bead structure is replaced, the extending length of a bead can be limited, and the locking piece is connected to the inner side of the buc